James d



l. D. SARVEN.

Vehicle-Spring.

Patentedjuly 27,1875.

FIG.2.

ATTEST.

NFETERS, FMoI'c-n-ITMOGMPMER. wAsm V nected together at or near their center.

can

ATENT OEEIoE.

JAMES 1). SARVEN, OF COLUMBIA, TENNESSEE.

IMPROVEMENT IN VEHICLE-SPRINGS.

Specification forming part of Letters Patent No. 165,956, dated July 27, 1875 application filed June 7, 1875.

To all whom it may concern:

Be it known that 1, JAMES D. SARVEN, of Columbia, in the county of Maury and State of Tennessee, have invented certain Improvements in Carriage-Springs, of which the following is a specification:

My invention relates to X-shaped wooden springs for vehicles; and consists in the use of a C-shaped spring to which the carriagebody is hung, instead of being directly attached to the Xsprings, as heretofore, for the purpose of allowing X-sprin gs greater freedom of motion, as will be explained, and in the insertion of an elastic bearing between the carriage body and the springs for giving a soft and easy motion to the body of the vehicle.

Figure 1 is a side view of an Xspring with my improvements attached, and also shows one method of attaching the Xsprings to the vehicle. Fig. 2 shows a section through the C-spring, and a connector for hanging the body of the vehicle.

A represents the X-springs, which are con- The lower ends of the back part of these springs rest upon the back axlebed, as shown in Fig. 1, or a bolster, this being immaterial, or they may rest upon cross-springs. The front ends may rest directly on the fifth-wheel, as shown in Fig. 1, in which a cross-piece is welded for that purpose, and through which the king-bolt extends, thus dispensing with the head-block and bolster, though either or a cross-spring may be interposed if preferred. WVhen the front ends rest directly on the fifth-wheel they should be curved, as shown, so as to be parallel, or nearly so, to the plane of the fifthwheel. The upper front ends of the springs will, in this case, be at some distance from the front corners of the vehicle body. lVhen desired to have them at or near the corners a bolster or some equivalent may be used. E

'E are Cshaped springs attached to the X- springs at or near their ends. Heretofore the ment, thus greatly impairing the effectiveness of the spring; but by the interposition of C- springs, as shown, this defect is entirely remedied, and the X-springs have fullplay. To these C-shaped springs are attached connectors F F for hanging the body of the vehicle. H is a bolt which fastens the C-spring and connector together. Between this bolt and the connector F I place caontchouc or other elastic material, as shown at G, Fig. 2, on which the connector bears, and thus give a soft and easy motion to the vehicle-body. This caoutchouc may, of course, be at the other end of the connector g, or may be dispensed with.

Instead of the connector, as shown, other forms may be used, as at F, for instance, which shows two links, or leather may be used, and and the connectors may be bolted directly to the vehicle body, thus forming a sort of bodyloop.

It will be observed that, though Csprings are used, there is no need of the usual bracing, the strain being directly onthe X-springs,. and not upon the axles or other portions of the running part, as is usually the case, thus allowing a considerable reduction in weight, and permitting of a vehicle being made very light and elastic."

If steel be substituted for wood in X-springs their ends may be bent to form the C. This might also be done with wood.

What I claim is- 1. In a carriage-spring, C-shaped springs, when combined with X-springs, so as to allow the ends of the X-springs greater freedom of motion, substantially as described.

2. In a carriage-spring, connectors F F, in combination with C-springs and X-springs, substantially as and for the purpose specified.

3. In combination with X-springs and C- springs, an elastic bearing between the carriage-body and C-springs, substantially as and for the purpose set forth.

In witness whereof I have hereto set my hand this 29th day of May, 1875.

J AS. D. SARVEN.

Witnesses:

RoB'r. H. PARKINSON, WM. S. BATES. 

